JP2016511042A5 - - Google Patents

Claims (12)

An elongated shaft;
A plurality of elongate cables, each cable extending beyond the elongate shaft, and having a first end and an intermediate portion configured to engage an endmost crown of a stent of a stent-graft prosthesis; A plurality of elongated cables having a second end extending distally beyond the stent-graft prosthesis;
A guide assembly disposed on the shaft;
A distal tip assembly coupled to a distal end of the shaft, wherein the distal tip assembly and the guide assembly are movable relative to each other, a portion of the distal tip assembly being part of the guide assembly Extending proximally beyond the outer surface of the distal portion of the distal end of the cable, the second end of the cable distally between the outer surface of the distal portion of the guide assembly and the inner surface of the distal tip assembly The tip assembly and the guide assembly are restrained at a first relative position, and the distal tip assembly does not restrain the second end of the cable at a second relative position of the distal tip assembly and the guide assembly. The distal tip assembly; and
A stent graft delivery system comprising:
In the first relative position of the distal tip assembly and the guide assembly, the cable tension can be selectively reduced due to the progressive continuous expansion of the endmost crown of the stent; The cable tension can be selectively increased due to a gradual continuous radial contraction of the extreme crown of the stent;
A stent graft delivery system characterized by the above. The guide assembly includes an elongated multi-lumen shaft, each cable passing through one of a plurality of lumens defined by the multi-lumen shaft;
The stent graft delivery system according to claim 1. An annular stop is coupled to the outer surface of the multi-lumen shaft and an intermediate portion of the cable surrounds the outermost crown to pull the stent against the annular stop;
The stent graft delivery system according to claim 2. The distal tip assembly moves relative to the guide assembly;
4. The stent graft delivery system according to claim 3. When the distal tip assembly moves distally relative to the guide assembly, the second end of the cable is in the distal tip when the guide assembly and the distal tip assembly are in a second relative position. Proximal to the assembly,
5. The stent graft delivery system according to claim 4. The guide assembly includes a guide component, each cable extends through a groove formed on an outer surface of the tapered distal portion of the guide component, and an intermediate portion of the cable is a stent of the stent-graft prosthesis. Extending beyond the most distal crown and covering the most distal crown of the stent of the stent-graft prosthesis,
The stent graft delivery system according to claim 1. The guide assembly moves relative to the distal tip assembly;
The stent graft delivery system according to claim 6. When the guide assembly moves proximally with respect to the distal tip assembly and the guide assembly and the distal tip assembly are in a second relative position, the second end of the cable is the distal tip. At the proximal end of the assembly,
8. The stent graft delivery system according to claim 7. An inner surface of the distal tip assembly includes a thread that mates with a thread on the outer surface of the guide assembly, and rotation of the elongate shaft causes the distal tip assembly to rotate, resulting in the guide assembly being longitudinal. Will move in the direction,
9. The stent graft delivery system according to claim 8. A retractable outer sheath defining a lumen, wherein the outer sheath is slidably received within the lumen of the outer sheath;
A self-expanding stent graft prosthesis disposed on the elongate shaft and proximal to the distal tip assembly, wherein the stent graft prosthesis is radially compressed coupled to a tubular graft. The self-expanding stent-graft prosthesis further comprising a possible stent, wherein the middle portion of the cable selectively restrains the most distal crown of the stent;
The stent graft delivery system according to claim 1. The plurality of cables are elongated strands having a first diameter, and a second end of the cable has a second diameter longer than the first diameter;
The stent graft delivery system according to claim 1. An elongated shaft;
A self-expanding stent-graft prosthesis disposed on the elongate shaft, wherein the stent-graft prosthesis includes a radially compressible stent coupled to a tubular graft. Ingredients,
A plurality of elongated cables, each cable extending beyond the elongated shaft and including a first end and a second end extending distally beyond the stent-graft prosthesis;
A guide assembly disposed on the shaft, the distal end of the guide assembly configured to receive a second end of the cable;
A stent graft delivery system comprising: a distal tip assembly coupled to a distal end of the shaft, wherein the distal tip assembly and the guide assembly are movable relative to each other. And
In a first relative position of the distal tip assembly and the guide assembly, a proximal portion of the distal tip assembly is a distal portion of the guide assembly to temporarily restrain the second end of the cable. And the cable tension can be selectively adjusted by the middle portion of each cable constraining the outermost crown of the stent, and the outermost surface of the stent. The crown is capable of both progressive and continuous radial expansion and contraction,
In a second relative position of the distal tip assembly and the guide assembly, the proximal portion of the distal tip assembly does not extend beyond the outer surface of the distal portion of the guide assembly, and the distal tip The assembly does not constrain the second end of the cable, and the intermediate portion of each cable does not constrain the outermost crown of the stent;
A stent graft delivery system characterized by the above.